Diver&#39;s mask with a single rotatable reflector for downward extended vision



FIG. 1 is a perspective view showing the front, top and left sides of a diver's mask with a single rotatable reflector, showing my new design; and,

FIG. 2 is a fragmentary perspective view of the mask showing the left and rear sides of the mask, the right side being symmetrically opposite. 

The ornamental design for a diver's mask with a single rotatable reflector for downward extended vision, as shown and described. 